class_docstr: [summary]
  
  Args:
    test {[type]} -- [description]
code: def _path_to(self, path):
      return os.path.join(self.path_root, path)
  
imports: import os
  import subprocess
  import sys
  import pytest
  import tensorflow
  import tensorflow_io
label_desc: Use image node_id 1 for calling the AZFSTestBase obj's underlying member method code with example usage: obj._path_to(path) and returns: os